Bottle-closure.



IATL'1\V1?FDl JULY 28, 1908.

'0. HAMMER. BOTTLE GLosU-RE.

APPLICATION FILI-3D MAR.25. 1908.

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@ my? www attoznu UNITED sTATEs PATENT oEErcE.

CHARLES HAMMER, OF NEW YORK, N.`Y., ASSIGNOR TO AMERICAN METAL CAP COMPANY, OF

` NEW YORK, N. Y., A CORPORATION OF NEW YORK.

BOTTLE-CLOS'URE.

Specification of LettersPatent.`

Patented July 2s, 190s.

To all whom it may concern:

Be it known that I,- CHARLEs, HAMMER, a citizen of the United States, residing at New York, in the county of New York and State 5 of New York, have invented new and useful the following is a specification.

This invention relates to lmprovements in closures for bottles, jars and other containers. t One of the objects of the invention visto provide an improved `construction of closure 'of that type embodying the use of separated spiral threads upon 'the bottle neck and a cap having in-punched locking projectlons to engage such threads, wherein the cap 1s formed with a bead or rim 4at the lower edge of its fiange forengagement with a shoulder upon the bottle neck below the threads, which bead or rim is of such a nature as to secure a firmer locking'engagement while at the same time strengthening the cap so as to permit of the use of thinner metal and prevent possibility of mutilationy of the locking projections from the pressure on the body of the ca produced in screwing the same upon the ottle.l

A further objectof the invention 1s to provide a bottle cap of the described ty e which.

is reinforced and strengthened by t e use of a stiffening wire or reinforcing member inclosed within the bead or rim, thus overcoming all liability of the distention or bending `of the metal from pressure and theconsequent liability of the projections being distorted or otherwise mutilated and rendering the cap useless.

The invention conslsts of the features of construction, combination and arrangement .40 of parts hereinafter fully described and modification in the arrangement of the Fig. 6 is va similar view showing al threads.

, modification in the construction of the cap. Referring to the drawings, the numeral 1 designates the neck of a bottle, jar or like. container, which may be of any suitable form, size, shape, and construction. This neck is formed adjacent to the upper end thereof with an annular rib or shoulder 2. Formed upon the neck above the rib is a plurality of separated spiral threads 3 and 4 Improvements in Bottle-Closures, of which which, as shown in Figs. 1 and 6 may extend from the upper edge of the neck nate adjacent the shoulder 2 in the form of and termif portions 5 parallel with such shoulder, leaving intervening contracted passages 6, or, as shownln Flg. 5 may extend upward from the rib or shoulder and terminate at their upper ends below the upper end of the neck,' so thatfbetween the shoulder and lower end advantage in the use-of the cap upon containers requiring the cap to fit with varying degrees of tightness.

The cap is formed of sheetmetal and comrises a crown ortion 7 having a depending ange 8, said an plurality of inpunched locking projections 9 to engage the threads 3 and 4. These inunched locking projections incline to conorm with the degree of inclination of the separated spiral threads, and are designed and arranged to engage the lower surfaces of such threads, from the construction and arrangement of which it will be apparent lthat the cap may be quickly applied to and removed from the bottle and securely fastened in position when fully applied.

In the form of the ribs shown in Figs. 1 and 6, the projections at the limit of movement e being provided with a 'of the cap in applying the same rest in the channels or recesses 6 and bear against the upper surface of the shoulder 2,*thus instituting a frictional engagement by which the cap is securely confined'in position. In the form of the threads shown in Fig. 5 the locking projections enga e the flarlng passages 6a, and thus'frictionallly engage the shoulder and threads forv a firm and securelocking action.

In accordance with the principle of the resent invention, the lower edge of the angeS of the cap is turned outwardly and upwardly to form a nearly circular rim or bead 10 which is designed to bear against the upper surface of the shoulder 2. This beadl not only 4stre'n thens the lower edge of the cap immediate y below the inpunched locking projec Lions, but allows a desired resiliency of that portion of the cap which comes in contact with the shoulder, to prevent objectionable pressure from being thrown upon the threads from the engagement of the edge of the rim with the shoulderin screwing on the cap, thus obviating liabilityT of distorting or otherwise mutilating the thread.

It will be observed that the rim or bead is not closed or contracted to any material extent, but, on the contrary, has its upper free edge spacedfrom the flange of the cap, whereby the necessary resiliency of the bead to adapt it to yield under its bearing pressure on the shoulder is permitted, and it will also be observed that the inpunched locking pro jeetions are located in line with or in a plane slightly below the plane of the free edge of the bead, by which said projections are practically concealed and protected from casual injury, the bead acting as a spring guard to protect the projections from blows or contacts with extraneous objects. As the bead is free to yield in the described manner, it is apparent that it will not only allow the cap to bind with greater force against the shoulder but will also absorb and prevent transmission of the resulting pressure and strain to that portion of the flange on which the projections are formed, thus obviating lia bility of buckling of the lower edge of the flange and injury to the projections when the cap is tightly screwed on the bottle neck.

In Fig. 6 I have shown a modification in the construction of the cap in which a stiftening wire 11 is .inclosed within the bead 10. This wire is not tightly inclosed and does not wholly impair the resiliency of the bead but limits such resiliency and increases the strength of the cap so that the rim may bear with a high degree of frictional pressure upon the shoulder 2 without liability of the strain being transmitted to the projections and causing their mutilation or distortion in the operations of applying and removing the cap, and particularly in wedging the cap tightly where an absolutely tight closure of the neck is necessary. This construction of the cap with the rim or bead at the lower end of its flange increases the strength and durability of caps of this character, and is of peculiar importance in the use. of inpunched locking projections of the type illustrated in -providing a means to bear frictionally upon the shoulder for a tight locking action and yet preventing the transmission of` the strain in such manner as to injure the projections and render the cap useless for further service.

rlhe usual sealing disk 12 may be employed in conjunction with the cap to seal the bottle or jar against the access of air or escape of gases.

Having thus fully described the invention, what is claimed as new is 1. The combination with a bottle or receptacle provided with an annular shoulder and a plurality of separated spiral threads formed thereon above said shoulder, of a cap provided at the lower edge of its flange with an outwardly and upwardly turned rim or bead to bear upon said shoulder and formed upon said flange with inpunched locking projections to engage said spiral threads, said projections being arranged in line with or below the plane of the upper edge of said rim or bead so as to be concealed and protected thereby, and said upper edge of the bead bein'g spaced from the flange of the cap to leave the bead free for a limited resiliency to prevent transmission ofthe bearing strain there- .from to the portion ofthe flange on which the locking projections are formed.

2. The combination with a bottle or re ceptaele provided with an annular shoulder and a plurality of' separated spiral threads formed thereon above said shoulder, of a cap provided at the lower edge of its flange with an outwardly and upwardly turned rim or bead to bear upon said shoulder and formed upon said flange with inpunched locking projections to engage said spiral threads, said projections being arranged in line with or below the plane of the upper edge of said rim or bead so as to be concealed and protected thereby, the said upper edge of the bead be ing spaced from the fiange of the cap to leave the bead free for resilient movement to prevent transmission of' the bearing strain therefrom to the port-ion of the flange on which the locking projections are formed, and a reinforcing wire disposed within the bead for limiting the resiliency thereof.

3. A bottle having a neck provided with an annular shoulder and a plurality of separated spiral threads above. the same, in combination with a cap having inturned locking projections to engage said threads and an outturned resilient rim or bead at its lower edge to engage said shoulder.

4. A bottle having a neck provided with an annular shoulder and a plurality of separated spiral threads above the same., in combination with a cap having inturned locking projections to engage said threads, an outturned resilient rim or bead at its lower edge to engage said shoulder, and a stiffening wire within the bead to limit the resiliency thereof.

In testimonywhereof I affix my signature. in presence of' two witnesses.I

CHARLES HAMMER.

Witnesses:

OLIVER E. DAVIS, 'JOHN M. CANTWELL. 

